Organic light-emitting diode (OLED) display panel and display device

Abstract

The present disclosure provides an organic light emitting diode (OLED) display panel and a display panel which include a display region, a binding region, and a bending region. A metal trace inside the bending regions generates a tensile stress region and a compressive stress region. A plurality of through holes are disposed on the metal trace. A distribution density of the through holes corresponding to the tensile stress region is different from distribution density of the through holes corresponding to the compressive stress region. It may relieve the stress, reduce the problems such as failure and bad products, reduce the bending angle to be smaller, and achieve narrower borders.

What is claimed is: 
     
       1. An organic light emitting diode (OLED) display panel, comprising:
 a display region, wherein a back of the display region is provided with a first backplane; 
 a binding region disposed on the back of the display region, wherein a surface of the binding region is provided with a second backplane; and 
 a bending region disposed between the display region and the binding region, wherein an inside of the bending region is provided with a metal trace; 
 wherein the metal trace generates a tensile stress region and a compressive stress region when the bending region bends toward the binding region, a plurality of through holes are disposed on the metal trace, wherein a distribution density of the through holes corresponding to the tensile stress region is different from distribution density of the through holes corresponding to the compressive stress region. 
 
     
     
       2. The OLED display panel according to  claim 1 , wherein the distribution density of the through holes corresponding to the tensile stress region is greater than the distribution density of the through holes corresponding to the compressive stress region. 
     
     
       3. The OLED display panel according to  claim 1 , wherein the bending region in a bent state is in a shape of semicircular arc. 
     
     
       4. The OLED display panel according to  claim 3 , wherein centerlines of the through holes intersect at one or more points. 
     
     
       5. The OLED display panel according to  claim 1 , wherein the bending region in a bent state is in a shape of non-semicircular arc. 
     
     
       6. The OLED display panel according to  claim 5 , wherein the bending region comprises a first bending region, a second bending region, and a third bending region, the second bending region is adjacent to the display region, the third bending region is adjacent to the binding region, the first bending region is positioned between the second bending region and the third bending region, the first bending region is in a shape of semicircular arc, and wherein a centerline of the OLED display panel is overlapped with a bend apex of the bending region. 
     
     
       7. The OLED display panel according to  claim 6 , wherein the through holes are disposed inside the first bending region. 
     
     
       8. The OLED display panel according to  claim 5 , wherein the bending region comprises a first bending region, a second bending region, and a third bending region, the second bending region is adjacent to the display region, the third bending region is adjacent to the binding region, the first bending region is positioned between the second bending region and the third bending region, the first bending region is in a shape of semicircular arc, and wherein a centerline of the OLED display panel is not overlapped with a bend apex of the bending region, and a length of the third bending region is shorter than length of the second bending region. 
     
     
       9. The OLED display panel according to  claim 8 , wherein the through holes are disposed inside the first bending region and the third bending region. 
     
     
       10. The OLED display panel according to  claim 1 , further comprising a reinforcing plate disposed between the first backplane and the second backplane. 
     
     
       11. An organic light emitting diode (OLED) display panel, comprising:
 a display region; 
 a back of the display region is provided with a binding region; and 
 a bending region disposed between the display region and the binding region, wherein an inside of the bending region is provided with a metal trace; 
 wherein the metal trace generates a tensile stress region and a compressive stress region when the bending region bends toward the binding region, a plurality of through holes are disposed on the metal trace, wherein a distribution density of the through holes corresponding to the tensile stress region is different from distribution density of the through holes corresponding to the compressive stress region. 
 
     
     
       12. The OLED display panel according to  claim 11 , wherein the distribution density of the through holes corresponding to the tensile stress region is greater than the distribution density of the through holes corresponding to the compressive stress region. 
     
     
       13. The OLED display panel according to  claim 11 , wherein the bending region in a bent state is in a shape of semicircle arc. 
     
     
       14. The OLED display panel according to  claim 13 , wherein centerlines of the through holes intersect at one or more points. 
     
     
       15. The OLED display panel according to  claim 11 , wherein the bending region in a bent state is in a shape of non-semicircle arc. 
     
     
       16. The OLED display panel according to  claim 15 , wherein the bending region comprises a first bending region, a second bending region, and a third bending region, the second bending region is adjacent to the display region, the third bending region is adjacent to the binding region, the first bending region is positioned between the second bending region and the third bending region, the first bending region is in a shape of semicircle arc, and wherein a centerline of the OLED display panel is overlapped with a bend apex of the bending region. 
     
     
       17. The OLED display panel according to  claim 16 , wherein the through holes are disposed inside the first bending region. 
     
     
       18. The OLED display panel according to  claim 15 , wherein the bending region comprises a first bending region, a second bending region, and a third bending region, the second bending region is adjacent to the display region, the third bending region is adjacent to the binding region, the first bending region is positioned between the second bending region and the third bending region, the first bending region is in a shape of semicircle arc, and wherein a centerline of the OLED display panel is not overlapped with a bend apex of the bending region, and a length of the third bending region is shorter than length of the second bending region. 
     
     
       19. The OLED display panel according to  claim 18 , wherein the through holes are disposed inside the first bending region and the third bending region. 
     
     
       20. A display device, comprising the organic light emitting diode (OLED) display panel as claimed in  claim 11 .